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#include<iostream>
using namespace std;
int main()
{
  cout << "Hello World" << endl; 
}

Alright, there you have it. Now let's dissect this little piece of code.

The first line is:

#include<iostream>

This is the preprocessor directive for this program. Anything that starts with a # is called a preprocessor directive in C++. It means that they are processed before compiling the actual program. Whatever is defined after # is done as preparation for program compilation. In this case we are including a file named iostream in our program that have standard defination for input and output and it is a library file that comes when you installed the compiler.

Next you have

using namespace std;

Here you are using something called a namespace  called std in our program. As you go on becoming advanced programmer you will properly understand what that is. You just use that for now.

After that the program starts with 

int main(){ }

This is called a main function. A C++ program always starts with a main function. The program will start the execution from there. This is the most essential part of the program.

In next line you just print out

Hello World!!!

which is done using 

cout <<

command. The endl means end line which basically says that in the output screen whatever output is going to be there, just put it in the next line. Play with the output to know about this more.

So, there it is... Your first C++ program. Welcome to the programming world!!!